Clutch device.



W. VORDERWINKLER.

CLUTCH DEVICE.

APPLICATION FILED JULY 6.1915.

Patented Apr. 24, 1917.

UNWED STATE PATENT @lFFlQE.

WILHELM vonnnrawiivunnn, or BROOKLYN, NEW YORK.

CLUTCH DEVICE.

Application filed July 6, 1915.

To all whom it may concern:

Be it known that I, VVILHE M Vonnnn- \VINKLER, a subject of the Emperor of Austria, and resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Clutch Devices, of which the following is a specification. I

It has been found that in devices used for winding coils of wire, rope, and similar articles, that the starting of the winding device causes a sudden strain upon the wire or cord, resulting in the frequent rupture or breaking of the same. It has further been found that a resilient clutch connecting the driving mechanism with the spool or drum, upon which the wire or cord is to be wound, overcomes theobjection stated and the present invention refers to a device of this nature and is characterized by the arrangement of a resilient connecting member of great eiiiciency, between the driving shaft and the driven drum which, in a simple and etlicient manner overcomes the 0bjection mentioned.

The invention is illustrated in one form of an embodiment in Figure 1 which is a side elevation, partially in section, of the assembled device.

Fig. 2 is an elevation, in a plane along the lines 22 of Fig. 1, the winding drum being again shown in a vertical cross section,

Fig. 3 is a top view of one member of the clutch device,

Fig. 4 is a horizontal cross sectional view, taken on line 44, of Fig. 2, and

Fig. 5 is a vertical cross sectional view, taken on line 55 of Fig. 2.

The entire device is supported upon a frame 1, having a horizontal driving shaft 2, which, by means of beveled gears 3 and 4, drives a vertical spindle 5. A bracket 6 is secured to the upper part of the spindle 5 and has rigidly attached the outer end of a wide spiral spring 7. Within this spring, in frictional contact therewith, and loosely mounted upon the spindle 5, is a cylinder 8, having an upper disk 9, provided with notches 10. A collar 11, secured to the spindle 5, prevents vertical displacement of the cylinder 8 and a band, or similar member 12, of sufficient strength, is secured to the bracket 6 at 12', then wound several times around the spring 7, and finally secured to a holder 13, of the disk 9. The

Specification of Letters Patent.

Patented Apr. 24, rear.

Serial No. 38,200.

end of the cord 12 is leftloose, as shown in the drawing and secured at 12 to the bracket 5. Loosely held on the shaft 5, is the, preferably, tapered winding drum 14, upon which the strand 15 is to be wound to form a coil.

The drum is provided with a cross piece 16, having studs 17, adapted to engage the recesses 10 of the disk 9, when the drum 14 is in its lower position. A bracket 18, on the frame 1 of the machine, forms the pivot for a bent foot lever 19, provided with a treadle 20, at its free end. This lever is suitably connected by means of a link 21, to a lever arm 22, secured to a shaft 23, pivoted in suitable bearings 24, of the frame 1. llhe lever 2 is provided with a pusher arm 25, substantially parallel to the spindle 5, and a similar arm may be arranged diametrically opposite to the first arm.

In operating the device, motion is imparted, in the usual way by the driving shaft 2, causing the spindle 5 and its devices, eXcept the drum, to rotate. The operator places his foot upon the treadle 20, so to lift the pins 17, of the drum 14, out of engagement with the clutch disk 9. As soon as the foot of the operator is taken ofi the treadle, and the arms 25 recede from their upper position, the weight of the drum will cause its descent on the shaft 5, until the pins 17 engage two of the notches 10, of the disk 9.

It will be noted that the disk 9 rotates with the shaft 5, through friction only, and as soon as the strain of the sudden start is imparted to the strand to be wound upon the drum, the binding member 12, will cause the compression of the spiral spring 7, by being wrapped around it through the movement of the arm thereby causing increased frictional contact with cylinder 8, considerably retarding the initial movement of the start and successfully preventing the breakage of the strand being wound.

In case of a reversal of the rotation of the drum, the relatively loose band 12, will. act in a similar way, causing a stress on the spiral spring 7, so as to take up the suddenness of the movement.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. The combination with a shaft and a bracket secured thereto, of a fiat spiral spring attached. at one end to said bracket,

one end of said band being secured to said bracket and the other to said cylinder, 5 whereby the tension of said spring upon said cylinder may be varied in accordance with the power transmitted.

Signed at New York, in the county of New York, and State of New York, this 16th 20 day of June A. D. 1915.

WILHELLI VORDERWVINKLER.

Witnesses Enron LonsTL, I. HAYsENLY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. Y 

